File Manipulation Vulnerability in Veeam Backup Repository
CVE-2026-21668

8.8HIGH

Key Information:

Vendor

Veeam
Status
Backup And Replication
Vendor
CVE Published:
12 March 2026

What is CVE-2026-21668?

This vulnerability permits an authenticated domain user to bypass established access restrictions and perform unauthorized manipulations on files within the Backup Repository. This could potentially lead to unauthorized changes to backup configurations, data exfiltration, or other malicious activities that could compromise the security and integrity of backup data.

Affected Version(s)

Backup and Replication 12.3.2

References

https://www.veeam.com/kb4830

CVSS V3.1

Score:
8.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.